Boiler cleaner



I Sept. 23, 1930. N, L. SNOW-ET AL.

BOILER CLEANER Filed June 28, 1926 2 Sheets-Sheet l amuel Ff Co):

ATTORNEYS.

Sept. 23, 1930. N, SNOW Er AL 1,776,399

BOILER CLEANER Filed June 28, 1926 2 Sheets-Sheet 2 INVENTORS, Norman ln-Snow. arnue?, 7-7 Conf A TTORNEY.

UNITEDSTATES NORMAN L. SNOW'AND SAMUEL E. COX, OP DETROIT, MICHIGAN, AssIGNORs To y'DIA- MOND POWER SPECIALTY CORPORATION, OE DETROIT, MICHIGAN, A CORPORATION Patented sept. 23, 1930 PATENT OFFICE Application filed .Tune 28,

l whereby the admission of cleaning fluid, with lrespect to angular positions of the blower ele ment maybe, readily varied. still further feature ofthe invention resides in the provision of a rotatable blower element, which in one form may be rotated throughout a plurality of revolutionsv with the valve preferably automatically seating at the completion of each revolution. In a modiiied form, the

invention provides a rotatable blower element which is adaptedfto be Oscillatedwith the valve preferably.automatically seating at the end of the rotative movement in each direction. f A

Referring to they accompanying drawings Ain whichlike reference characters indicate corresponding parts, v

`Figure 1 is a sectional elevation viewof vour invention, l

f 'Figure 2 is an end elevation view ofthe cam and" valve 'with the cover plate `removed showing the'valve in closed position,

'f ivFigure 3 isa like view showing the valve in open position,

Figure lief an :elevation view correspond- Y ing to Figure 2, illustrating a modified con* struction in which the blower element oscilklates, Aand Figure 5 is an elevation view of theforni ,fshow-n, in Figure A and corresponding to the valve position shown in Figure 3.

In .thel drawings referencecharacter illustrates the boiler wall and 11 the usual boil-v er tubes. `To clean the tubes and other parts of the boiler,l we have provided the soot blower element 12, fitted as .usual with Cleaning fluid dischargenozzles 13. The element ROILER CLEANER 1926. Serial N0. 119,192.

12 extends through wall box 14 and is `journaled in the head A.

For imparting rotation to the blower element, we may provide sheave wheel 15 mounted on shaft 16, positioned in bracket 17 forming part of the head A. Keyed to one end of shaft 16 as at 18 is a driving pinion 19 meshing with a driven gear` 20, which in turnis fixed as by set screw 21 to the element.A One end vof the element passes into the head A through gland 22 and packing 23 and thread,- edly carries a valve cage 24,`thelatter being provided with a ysuitable cleaning fluid port or valve seat 25. Cleaning fiuid rnay be admitted to the interior of head A, in any suitable manner, as by supply pipe 26.y

Pivotally attached to valve cage 24, andadapted to rotate therewith, upon rotation of the blower element, is the valve 27 pivoted on` pin 28. This valve may be of theA plate type, as shown, and isv opened or closed by swinging upon pin 28. To govern this swinging movement of the valve, relative to the valve port 25, we have provided an exten'- sion 27a of the plate valve with a pin 28a carrying roller 29. This roller runs lin a maehined guide-way 30, of the stationary cam element 31, the latter being' secured to the head cover plate 32 by counter-sunk 'screws 33. The cover plate 32 may be attached to yhead A by bolts 34 and serves toclose the open end of the head. n

In Figure 2 the plate valve 2'7 is shown in its closed position, while in Figure 3, the valve is shown unseated with respect to the port or valve seat 25. The guide-way is made to vary with thedegree of blowing are desired. Thus it may be 'formed with a high level 35 and a low level 36. 'lVhenroller 29 runs from the low level 36 to the high level ,the transition point from the high yto the low level. At this point the valve 27 is swung with our invention, the cam element 3l including guide-way 30 may be readily removed and about its pivot 28 over against Vthe other limiting stop pin 39 and uncovering the port as seen in Figure3.` The valve is held open throughout the low level of the guide-way over the arc designated in Figure 3. Upon the roller reaching point 38, it again passes to the high level portion 35 restoring the valve 27 to its position shown-in Figui-c 2, closing port 25.v y 1 Y l When different arcs of blo-wing are desired iently removable as a unit.

' ing arcl Y In Figures 2 and 3, the blower 'element may becontinuousl'y rotated in one direction, the valve .automatically seating, at the completion of the blowing arc and unseating at the beginning of the blowing arc for each rotation of the blowerelement'. lt desired the operator might impart an oscillatory motion to the blower element, whereby the valve will. automatically seat at the completion of thek rotation in each direction.

In order that the operator might be advised when the valve isseated when an oscillatory movement is imparted to the blower element, we have provided stops 4l' andY 4Q, as shown in Figures 4L andl 5. These stops are located in the guide-way 30 and are engageable by ro-ller 29, when the latter moves from the low level 36y to the high level 35 for each direction of rot-ation of the blower element.

VVha't we claim as our invention is:

y l. VThe combination with a rotatable blower element, of a valve controlling the admission of cleaning fluid thereto, said valve being rotatable in unison with the blower element and also transversely movable relative thereto, and means responsive to rotation ofthe blower element for maintaining said valve unseated througha predetermined blowing arc and seatingsaid valve at both ends or' said blow- 2. The combination with a rotatable blower element adapted to be oscillated between predetermined points, the, aro of oscillation including the ,blowing are, of a valve contro-lling the admission of cleaning fluid thereto, said valve being rotatable in unison with the blower element and also transversely movable relative thereto,` and means responsive to osj oillation of the blower element between said v, predetermined points for maintaining said valve unseated when the blower element is moving through said blowing arc and seating said valve at both ends of said blowing are. s

3. The combination with a rotatable blower element adapted Vfor-unlimited rotation in a givendirection, of a valve controllingthe admission otcleaning iiui'd thereto, lsaid valve being rotatable in unison withthe blower element and also transversely movable relative thereto, and meansresponsive to a continuous rotative movement of the blower element for maintaining said valve unseated'throughout a predetermined arc of ecali revolution of the blower element and for maintaining said t valve seated throughout substantially the remainder of eachrevolution-V othe `blower element.

4. The Combination wana faaatiebiwa- 'element adapted to be oscillatedbetween predetermined points, the arc of oscillation` includingthe blowing arc, of a valve controlling the admission of cleaningr fluid thereto, saidy valve being rotatable in Vuni-'son with the blower element and also transversely movable relative thereto, said yblower element being provided with a seat for said valve, and means responsive to oscillation of the blower element 'i between said predetermined rpoints for maintaining said valve unseated when the blower element is moving throughV said blowing arc and seating said valve at ybo-th endsof said blowing arc. l i f A l '5. The combination with a rotatable blow-er element adaptedfor unlimited rotation ina given direction, of'a valve controllingthe'admission vof cleaning iuid thereto, said valve being rotatable in unison with the' blower element and also transversely movable relative thereto, said blower element -bei-ng provided with a seat for said valve, and means responsive to a continuous rotativemovement of the blower element forrmaintaining said valve Y unseated throughout apredeterminedarc of each revolution of theblower element and llOO for maintaining said valve seated througli'out substantially the remainderof each revolution of the blower element. 'i

6. The combination with al rotary blower element and means for rotating the same, of a valve tor controlling the .admission of clean- K ing Huid tothe blower f element,- means for pivotally mounting said i valve upon said blower element, said valve being thus rotatable withv the blower element and also movable on its pivot relative to lsaid blower element, and means responsive-to rotation ofthekk 5' blower element for maintaining said valve unseated through predetermined blowing arc blowing arz'. .y

7. The combination wit'hal rotary Ablower and seat-inop said valve at both endsof said -V I element and means for rotating the same, of

a valve cage rotatable withthe element and provided with a port for admitting cleaning fluid .to .said blower element, 'a plate valve, y means pivotally supporting said valve on Athe vailvecalge'so as to seat on saidport', a; cam provided `witha guide-way,`a'pi1,i carried by.

the valve extending substantially perpendicularly from the tace'offsa-id valve,a-roller' enlas gageable in said guide-way andea'rrie'dfbyethe JI3() pin, said guide-way being shaped to maintain said valve unseated, upon rotation of the blower element, through a predetermined blowing aro and to seat said valve at both 5 ends of said blowing are. A*

In testnnony whereof we afx our slgna.-

tures.

l NORMAN L. SNOW.

SAMUEL F. COX. 

